Polyurethane O-Rings - Cast Urethane O-Rings

Polyurethane O-Rings
Polyurethane O-Rings

General Polyurethane O-Rings Description:

Polyurethane rubber is a thermoplastic elastomer formed by reacting a polyol with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. Polyurethane rubber is widely used due to its high strength, and excellent tear and abrasion resistance. Polyurethane also provides excellent permeation resistance.

Choose Marco Rubber & Plastics for your Polyurethane O-Rings

For more than 40 years, Marco Rubber & Plastics has been offering custom and standard o-rings and other sealing solutions for multiple industries. With millions of products produced and shipped annually, we are the experts your organization needs to seal the success of your application. Explore standard size o-ring sizes below.
Specialty Resistances
  • Some Petroleum Oils
  • Some Hydrocarbon Fuels
  • Oxygen / Ozone
  • Not resistant to Ketones (MEK)
  • Not resistant to Acids
  • Not resistant to Auto / Aircraft Brake Fluids
  • Not resistant to Chlorinated Hydrocarbons
  • Not resistant to Water
Mechanical Properties
  • Excellent Wear Resistance
  • Poor Compression Set Resistance
  • Excellent Short-Term Resilience

Popular Polyurethane O-Rings Compounds:

Hundreds more specialty compounds available. Contact a Marco Sales Consultant or Engineer for more information.

Compound # Datasheet Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Features
P1000 Translucent 70 O-ring Price Comparison 5 Med 250 -65 High performance 70 durometer Polyurethane Get QuoteBuy Online
P1001 Translucent 90 O-ring Price Comparison 5 Med 250 -65 High performance 90 durometer Polyurethane Get QuoteBuy Online
P1004 Translucent 90 O-ring Price Comparison 3 Med 180 -30 General purpose 90 durometer Polyurethane Get QuoteBuy Online
P1006 Translucent 70 O-ring Price Comparison 3 Med 180 -30 General purpose 70 durometer Polyurethane Get QuoteBuy Online

Polyurethane O-Rings Temperature Range:

The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.

Common Names:

Urethane, AU, EU, PU

Trade Names:

Adiprene®, Millathane®, Vibrathane®

Polyurethane Rubber O-Rings Features:

  • Good hydraulic oil and gasoline resistance
  • Resistant to pure aliphatic hydrocarbons (propane, butane, fuel)
  • Resistance to mineral and silicone oils and greases
  • Resistant to water, oxygen, ozone and aging
  • Excellent tear and abrasion resistance
  • Available in multiple types and compounds to meet performance and cost requirements

Polyurethane Rubber O-Rings Limitations:

  • Not compatible with acids, ketones, esters, ethers, alcohols, glycols
  • Hot water, steam, alkalis and amines

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